package com.blu.admin;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import com.blu.entity.Tag;
import com.blu.service.TagService;

@Controller
@RequestMapping("/admin")
public class TagController {
	
	@Autowired
	private TagService tagService;
	
	@GetMapping("/tags")
	public String tags(@PageableDefault(size = 8,sort = {"id"},direction= Sort.Direction.DESC)
			Pageable pageable,Model model){
		
		Page<Tag> page = tagService.listTag(pageable);
		model.addAttribute("page",page);
		return "/admin/tags";
		
	}
	
	@GetMapping("tags/input")
	public String input(Model model) {
		model.addAttribute("tag", new Tag());
		return "admin/tags-input";
	}
	
	@PostMapping("/tags")
	public String postTag(@Valid Tag tag, BindingResult result,RedirectAttributes attributes) {
		Tag tag1 = tagService.getTagByName(tag.getName());
		if(tag1 != null) {
			result.rejectValue("name", "nameError","该标签已存在");
			return "admin/tags-input";
		}
		
		if(result.hasErrors()) {
			return "admin/tags-input";
		}
		
		Tag t = tagService.saveTag(tag);
		if (t == null) {
			attributes.addFlashAttribute("message", "新增失败");
		} else {
			attributes.addFlashAttribute("message", "新增成功");
		}
		return "redirect:/admin/tags";
	}
	
	@GetMapping("/tags/{id}/input")
	public String editTag(@PathVariable Long id, Model model) {
		model.addAttribute("tag", tagService.getTag(id));
		return "admin/tags-input";
	}

	@PostMapping("/tags/{id}")
	public String editPostTag(@Valid Tag tag,BindingResult result, @PathVariable Long id,RedirectAttributes attributes) {
		Tag tag1 = tagService.getTagByName(tag.getName());
		if(tag1 != null) {
			result.rejectValue("name", "nameError","该标签已存在");
			return "admin/tags-input";
		}
		
		if(result.hasErrors()) {
			return "admin/tags-input";
		}
		
		Tag t = tagService.updateTag(id, tag);
		if (t == null) {
			attributes.addFlashAttribute("message", "修改失败");
		} else {
			attributes.addFlashAttribute("message", "修改成功");
		}
		return "redirect:/admin/tags";
	}
	
	@GetMapping("/tags/{id}/delete")
	public String delete(@PathVariable Long id, RedirectAttributes attributes) {
		tagService.deleteTag(id);
		attributes.addFlashAttribute("message", "删除成功");
		return "redirect:/admin/tags";
	}
	
	
}
